CVE-2025-62023

9.8 CRITICAL

📋 TL;DR

This CVE describes a critical remote code execution vulnerability in the s2Member WordPress plugin. Attackers can inject arbitrary code through improper input validation, potentially gaining full control of affected WordPress sites. All WordPress installations using vulnerable versions of s2Member are affected.

💻 Affected Systems

Products:
  • WordPress s2Member plugin
Versions: All versions up to and including 250905
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All WordPress installations with s2Member plugin enabled are vulnerable regardless of configuration.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of the WordPress installation, allowing attackers to execute arbitrary code, steal sensitive data, install backdoors, or pivot to other systems.

🟠

Likely Case

Attackers gain shell access to the web server, deface websites, install cryptocurrency miners, or steal user credentials and payment information.

🟢

If Mitigated

With proper web application firewalls and input validation, exploitation attempts are blocked, limiting impact to failed attack attempts.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

The vulnerability is publicly documented with proof-of-concept available, making exploitation straightforward for attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 250905

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/s2member/vulnerability/wordpress-s2member-plugin-250905-remote-code-execution-rce-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find s2Member and click 'Update Now'. 4. Verify update to version after 250905. 5. Clear any caching plugins.

🔧 Temporary Workarounds

Disable s2Member Plugin

all

Temporarily disable the vulnerable plugin until patching is possible

wp plugin deactivate s2member

Web Application Firewall Rule

all

Block malicious input patterns targeting s2Member endpoints

Add WAF rule to block requests containing suspicious code injection patterns to s2Member paths

🧯 If You Can't Patch

  • Isolate affected WordPress instances behind additional firewall rules
  • Implement strict input validation and sanitization for all user inputs

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → s2Member version. If version is 250905 or earlier, system is vulnerable.

Check Version:

wp plugin list --name=s2member --field=version

Verify Fix Applied:

Verify s2Member plugin version is greater than 250905 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to s2Member endpoints
  • PHP code execution attempts in web server logs
  • Unexpected file creations in WordPress directories

Network Indicators:

  • HTTP requests containing code injection patterns to /wp-content/plugins/s2member/ paths
  • Unusual outbound connections from web server

SIEM Query:

source="web_server_logs" AND (uri="*s2member*" AND (body="*eval(*" OR body="*system(*" OR body="*shell_exec(*"))

🔗 References

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